MT Auto Parts Blog | Expert Tips for BMW enthusiasts on BMW Parts, Accessories, Engines and More

  Photo by Christian Wiediger on Unsplash Nobody buys a BMW 335i, 135i or 535i expecting a quiet life. You buy one because it's properly quick, sounds fantastic, and, if you ever get curious about what lurks beneath that bonnet, turns out to be one of the most tuneable engines BMW has ever produced. Three hundred horsepower from the factory, and with a modest tune, you're looking at four hundred without breaking a sweat. The N54 also leaks oil like a sieve, eats fuel pumps for breakfast, and will rattle at you from the turbos until you either fix it or learn to live with the noise. It shipped with fuel injectors, which BMW quietly revised multiple times because the originals weren't up to scratch. The BMW water pump is electric, which sounds clever until it produces problems. That's the deal with the N54. You know this going in, or you find out the hard way. Either way, this guide tells you what to watch for, what it means when something goes wrong, and what to do abou...

  Image: BMW M2, M3, M4 Series turbocharger pair for £807.49 The BMW turbocharger is one of those components that works invisibly until it doesn’t. One day your BMW pulls cleanly away from every junction and holds motorway speeds without complaint. Then comes a whine under acceleration, a slightly flat feeling in the mid-range, maybe a puff of blue smoke on startup. And then someone tells you the turbo needs replacing. What follows next depends almost entirely on what you do next. A BMW turbocharger replacement done correctly, with the right part, from the right source, at the right price, puts the car back to how it should feel. The same job done with the wrong part, or without finding out why the turbo failed in the first place, and you’ll be having the same conversation again within a year. This guide covers both the cost and the decision. How to Tell Your BMW Turbo Is Failing Most turbocharger problems announce themselves gradually before they fail. The symptoms worth knowing...